diff options
Diffstat (limited to '')
| -rw-r--r-- | src/stable/pearsonhash.h | 54 |
1 files changed, 27 insertions, 27 deletions
diff --git a/src/stable/pearsonhash.h b/src/stable/pearsonhash.h index ca377c1..ece1d40 100644 --- a/src/stable/pearsonhash.h +++ b/src/stable/pearsonhash.h | |||
| @@ -12,35 +12,35 @@ | |||
| 12 | 12 | ||
| 13 | namespace Bu | 13 | namespace Bu |
| 14 | { | 14 | { |
| 15 | /** | 15 | /** |
| 16 | * A pearson hash is a non-cryptographically secure hashing function that | 16 | * A pearson hash is a non-cryptographically secure hashing function that |
| 17 | * is very light on resources, very fast, and produces a single byte | 17 | * is very light on resources, very fast, and produces a single byte |
| 18 | * as it's output. It is strongly dependant on every byte in the input, | 18 | * as it's output. It is strongly dependant on every byte in the input, |
| 19 | * which means that it's a good choice for adding to short messages to | 19 | * which means that it's a good choice for adding to short messages to |
| 20 | * ensure that the contents of the messages are unchanged. | 20 | * ensure that the contents of the messages are unchanged. |
| 21 | * | 21 | * |
| 22 | * Pearson hash is named for it's inventor Peter K. Pearson who described | 22 | * Pearson hash is named for it's inventor Peter K. Pearson who described |
| 23 | * it in his article "Fast hashing of variable-length text strings" | 23 | * it in his article "Fast hashing of variable-length text strings" |
| 24 | * published in 1990 by ACM. I haven't read it, because you have to pay to | 24 | * published in 1990 by ACM. I haven't read it, because you have to pay to |
| 25 | * get a copy :-P | 25 | * get a copy :-P |
| 26 | */ | 26 | */ |
| 27 | class PearsonHash : public Bu::CryptoHash | 27 | class PearsonHash : public Bu::CryptoHash |
| 28 | { | 28 | { |
| 29 | public: | 29 | public: |
| 30 | PearsonHash(); | 30 | PearsonHash(); |
| 31 | virtual ~PearsonHash(); | 31 | virtual ~PearsonHash(); |
| 32 | 32 | ||
| 33 | virtual void reset(); | 33 | virtual void reset(); |
| 34 | virtual void setSalt( const Bu::String &sSalt ); | 34 | virtual void setSalt( const Bu::String &sSalt ); |
| 35 | virtual void addData( const void *sData, int iSize ); | 35 | virtual void addData( const void *sData, int iSize ); |
| 36 | using Bu::CryptoHash::addData; | 36 | using Bu::CryptoHash::addData; |
| 37 | virtual String getResult(); | 37 | virtual String getResult(); |
| 38 | virtual void writeResult( Stream &sOut ); | 38 | virtual void writeResult( Stream &sOut ); |
| 39 | 39 | ||
| 40 | private: | 40 | private: |
| 41 | static uint8_t aSBox[256]; | 41 | static uint8_t aSBox[256]; |
| 42 | uint8_t iValue; | 42 | uint8_t iValue; |
| 43 | }; | 43 | }; |
| 44 | }; | 44 | }; |
| 45 | 45 | ||
| 46 | #endif | 46 | #endif |
